linux-kernel - RE: [PATCH v3 1/2] ASoC: amd: Don't show messages about deferred probing by default

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Date:   Fri, 23 Jul 2021 13:04:51 +0000
From:   "Limonciello, Mario" <Mario.Limonciello@....com>
To:     Mark Brown <broonie@...nel.org>
CC:     "alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
        "Mukunda, Vijendar" <Vijendar.Mukunda@....com>,
        "markpearson@...ovo.com" <markpearson@...ovo.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        open list <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v3 1/2] ASoC: amd: Don't show messages about deferred
 probing by default

[Public]

> 
> On Thu, Jul 22, 2021 at 08:27:27AM -0500, Mario Limonciello wrote:
> 
> > This isn't useful to a user, especially as probing will run again.
> > Use the dev_err_probe helper to hide the deferrerd probing messages.
> 
> The reason we have these error messages is that they are very useful to
> users if they ever find that the device isn't instantiating due to some
> missing dependency or something that leaves it stuck in probe deferral,
> they give some hint as to what might be wrong.

Right, but they should be at debugging level, if someone has a problem they
turn on dynamic debugging for the module and then can see these messages.

To reinforce my point - that's what the drivers in patch 2/2 do already (but are
being moved to this helper) and furthermore this was in result to some reports
looking at this message in bootup thinking it was a problem but it being a red
herring.